UCC256404DDBR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UCC256404DDBR is an LLC resonant controller IC from Texas Instruments featuring current-mode resonant control, ultra-low power standby operation, and high-voltage startup capability, operable from -40°C to 125°C. It integrates advanced burst-mode control for ultra-quiet standby and supports a 13V to 30V input supply range in a 14-pin SOIC package. Available from authorized distributors worldwide with full RoHS compliance.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- UCC256404DDBR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.4713(MOQ 100)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- LLC resonant current-mode control enables high-efficiency soft-switching power conversion over a wide load range
- Ultra-low power and ultra-quiet burst-mode standby minimizes EMI and no-load consumption in server and telecom supplies
- High-voltage startup circuitry eliminates the need for an external startup resistor, reducing component count and cost
- Wide -40°C to 125°C operating range supports industrial, telecom, and server environments with demanding thermal requirements
Applications
The UCC256404DDBR is designed for high-efficiency LLC resonant half-bridge and full-bridge DC-DC converter stages used in server power supplies, telecom rectifiers, and high-density adapters where minimizing switching losses and EMI are priorities. Its ultra-quiet burst-mode standby control is ideal for energy-star-compliant power supplies and AC-DC adapters that must meet strict no-load power consumption regulations. The device also suits industrial DC power distribution and EV on-board charger secondary-side regulation circuits where the wide operating temperature range is a key requirement.
Specifications
| Pbfree Code | Yes |
| Date Of Intro | 2019-11-17 |
| YTEOL | 15 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | RESONANT CONTROL |
| Input Voltage-Max | 30V |
| Input Voltage-Min | 13V |
| Input Voltage-Nom | 15V |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 1.2A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Supply Current-Max (Isup) | 2.7mA |
| Supply Voltage-Max (Vsup) | 30V |
| Supply Voltage-Min (Vsup) | 13V |
| Surface Mount | YES |
| Switching Frequency-Max | 99.7kHz |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What control topology does the UCC256404DDBR implement?
The UCC256404DDBR implements current-mode LLC resonant control, which is the preferred technique for high-efficiency soft-switching DC-DC converters. This approach achieves zero-voltage switching (ZVS) on the primary side and zero-current switching (ZCS) on the secondary side, significantly reducing switching losses and EMI compared to hard-switching PWM controllers.
What is the input voltage range of the UCC256404DDBR?
The UCC256404DDBR operates with an input voltage range of 13V to 30V, with a nominal input of 15V, making it compatible with standard bias rails in isolated power supply designs. It also integrates high-voltage startup circuitry to simplify the startup section and reduce external component count.
How does the UCC256404DDBR achieve low standby power and quiet operation?
The UCC256404DDBR features ultra-low power, ultra-quiet burst-mode standby control that reduces switching frequency and pulse count under light load conditions. This minimizes both standby power dissipation and audible noise from magnetic components, enabling compliance with energy efficiency standards such as Energy Star, ErP, and DoE Level VI in adapter and server PSU designs.
What temperature range does the UCC256404DDBR support and what package does it use?
The UCC256404DDBR operates over an extended temperature range of -40°C to 125°C, qualifying it for industrial, telecom, and automotive-adjacent applications. It is housed in a 14-pin SOIC (Small Outline Integrated Circuit) surface-mount package, which is widely supported by automated PCB assembly processes and provides a good balance of thermal performance and board density.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $1.7504 | $175.04 |
| 250+ | $1.6554 | $413.86 |
| 500+ | $1.6218 | $810.90 |
| 2500+ | $1.5013 | $3753.22 |
| 5000+ | $1.4713 | $7356.50 |
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